1/*
2 * Copyright (c) 2000 by Matthew Jacob
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions, and the following disclaimer,
10 *    without modification, immediately at the beginning of the file.
11 * 2. The name of the author may not be used to endorse or promote products
12 *    derived from this software without specific prior written permission.
13 *
14 * Alternatively, this software may be distributed under the terms of the
15 * the GNU Public License ("GPL").
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * Matthew Jacob
30 * Feral Software
31 * mjacob@feral.com
32 */
33#include <unistd.h>
34#include <stddef.h>
35#include <stdint.h>
36#include <stdlib.h>
37#include <stdio.h>
38#include <fcntl.h>
39#include <errno.h>
40#include <string.h>
41#include <syslog.h>
42#include <unistd.h>
43#include <sys/ioctl.h>
44#include <cam/scsi/scsi_all.h>
45#include <cam/scsi/scsi_enc.h>
46
47#define	ALLSTAT (SES_ENCSTAT_UNRECOV | SES_ENCSTAT_CRITICAL | \
48	SES_ENCSTAT_NONCRITICAL | SES_ENCSTAT_INFO)
49
50/*
51 * Monitor named SES devices and note (via syslog) any changes in status.
52 */
53
54int
55main(int a, char **v)
56{
57	static const char *usage =
58	    "usage: %s [ -c ] [ -d ] [ -t pollinterval ] device [ device ]\n";
59	int fd, polltime, dev, nodaemon, clear, c;
60	encioc_enc_status_t stat, nstat, *carray;
61
62	if (a < 2) {
63		fprintf(stderr, usage, *v);
64		return (1);
65	}
66
67	nodaemon = 0;
68	polltime = 30;
69	clear = 0;
70	while ((c = getopt(a, v, "cdt:")) != -1) {
71		switch (c) {
72		case 'c':
73			clear = 1;
74			break;
75		case 'd':
76			nodaemon = 1;
77			break;
78		case 't':
79			polltime = atoi(optarg);
80			break;
81		default:
82			fprintf(stderr, usage, *v);
83			return (1);
84		}
85	}
86
87	carray = malloc(a);
88	if (carray == NULL) {
89		perror("malloc");
90		return (1);
91	}
92	for (dev = optind; dev < a; dev++)
93		carray[dev] = (encioc_enc_status_t) -1;
94
95	/*
96	 * Check to make sure we can open all devices
97	 */
98	for (dev = optind; dev < a; dev++) {
99		fd = open(v[dev], O_RDWR);
100		if (fd < 0) {
101			perror(v[dev]);
102			return (1);
103		}
104		if (ioctl(fd, ENCIOC_INIT, NULL) < 0) {
105			fprintf(stderr, "%s: ENCIOC_INIT fails- %s\n",
106			    v[dev], strerror(errno));
107			return (1);
108		}
109		(void) close(fd);
110	}
111	if (nodaemon == 0) {
112		if (daemon(0, 0) < 0) {
113			perror("daemon");
114			return (1);
115		}
116		openlog("sesd", LOG_CONS, LOG_USER);
117	} else {
118		openlog("sesd", LOG_CONS|LOG_PERROR, LOG_USER);
119	}
120
121	for (;;) {
122		for (dev = optind; dev < a; dev++) {
123			fd = open(v[dev], O_RDWR);
124			if (fd < 0) {
125				syslog(LOG_ERR, "%s: %m", v[dev]);
126				continue;
127			}
128
129			/*
130			 * Get the actual current enclosure status.
131			 */
132			if (ioctl(fd, ENCIOC_GETENCSTAT, (caddr_t) &stat) < 0) {
133				syslog(LOG_ERR,
134				    "%s: ENCIOC_GETENCSTAT- %m", v[dev]);
135				(void) close(fd);
136				continue;
137			}
138			if (stat != 0 && clear) {
139				nstat = 0;
140				if (ioctl(fd, ENCIOC_SETENCSTAT,
141				    (caddr_t) &nstat) < 0) {
142					syslog(LOG_ERR,
143					    "%s: ENCIOC_SETENCSTAT- %m", v[dev]);
144				}
145			}
146			(void) close(fd);
147
148			if (stat == carray[dev])
149				continue;
150
151			carray[dev] = stat;
152			if ((stat & ALLSTAT) == 0) {
153				syslog(LOG_NOTICE,
154				    "%s: Enclosure Status OK", v[dev]);
155			}
156			if (stat & SES_ENCSTAT_INFO) {
157				syslog(LOG_NOTICE,
158				    "%s: Enclosure Has Information", v[dev]);
159			}
160			if (stat & SES_ENCSTAT_NONCRITICAL) {
161				syslog(LOG_WARNING,
162				    "%s: Enclosure Non-Critical", v[dev]);
163			}
164			if (stat & SES_ENCSTAT_CRITICAL) {
165				syslog(LOG_CRIT,
166				    "%s: Enclosure Critical", v[dev]);
167			}
168			if (stat & SES_ENCSTAT_UNRECOV) {
169				syslog(LOG_ALERT,
170				    "%s: Enclosure Unrecoverable", v[dev]);
171			}
172		}
173		sleep(polltime);
174	}
175	/* NOTREACHED */
176}
177